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4B3.9-G2-B G-Drive Engine Parts

For the same model of engine, Cummins havedifferent SO (Shop Order) number, which have some tiny different to match therequirement from different customers, but most of the major components are thesame in the same model, so we randomly choose one of the SO number parts listto show on our website for your reference, if you need accurate parts list,please contact PartMac with your engine name plate, engine serial number orengine SO number, then our sales team will go back to you with parts catalogmatching to your engine. We provide maintenance manual, operation manual aswell technical support, we can also provide on-site engineer services to do therepair and maintenance works if customers pay all the relevant costs, pleasefeel free to contact us if you have any other questions.

Technical Specifications

Engine Model:4B3.9-G2-B (-B means 1800 RPM engine)
Engine Type:4  Cylinders
Displacement:3.9 L
Rated Speed:1800 RPM
Rated Power / Speed:30 kW @ 1800 RPM
Fuel System:BYC A Pump / Electronic Governor
Cooling System:32 kW
Aspiration Method:Naturally Aspirated
Emission Standard:N/A
Bore * stroke:102 mm * 120 mm
Packing Size(L * W * H):1080 mm * 625 mm * 1085 mm
Wet Weight:308 kg
Lead Time:15-30 Working Days
Payment Terms:T/T ,L/C

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Click Kit Name to Check Part List

CLEANER,AIR

No.Part No.Part NameQty/EngRemarks
1C3901249SCREW,HEX FLANGE HEAD2
2C3901249SCREW,HEX FLANGE HEAD2
3C3903210NUT,HEXAGON FLANGE2
4C3978436CLAMP,T BOLT1
5C4928974CLAMP,T BOLT1
6C4935856HOSE,PLAIN1
7C4939579BRACKET,AIR CLEANER1
8C4939580CLEANER,AIR1
9C4939581CONNECTION,AIR INTAKE1
——END——

COUPLING,FUEL PUMP

No.Part No.Part NameQty/EngRemarks
1C3900630Screw,Hex flange headcap1
2C3960485GEAR,FUEL PUMP1
3C3967107WASHER,PLAIN2
4C3967108WASHER,SPRING2
5C3977315STUD4
6C3977319CONNECTOR,MALE1
7C3977321HOSE,FLEXIBLE1
8C4932602BRACE,FUEL PUMP1
9C4988581NUT,HEXAGON FLANGE4
10C4991523SCREW,HEXAGON HEAD CAP2
11C4991549SUPPORT,FUEL PUMP1
——END——

PLUMBING,FUEL

No.Part No.Part NameQty/EngRemarks
1C3900630Screw,Hex flange headcap2
2C3903380SEAL,BANJO CONNECTOR4
3C3905307SCREW,BANJO CONNECTOR4
4C4928946SCREW,HEX FLANGE HEAD CA3
5C4932532TUBE,FUEL DRAIN1
6C4932608CONNECTOR,T1
7C4934018MANIFOLD,FUEL1
8C4982686TUBE,INJECTOR FUEL SUPPL1
9C4988331TUBE,FUEL DRAIN1
10C4994848SEAL,GROMMET2
——END——

COVER,CYLINDER BLOCK

No.Part No.Part NameQty/EngRemarks
2C101322CAP,FILLER1
3C3906696SEAL,RECTANGULAR RING1
4C3910495SCREW,HEX FLANGE HEAD CA2
5C4988432TUBE,OIL FILLER1
——END——

APPROVAL,AGENCY

No.Part No.Part NameQty/EngRemarks
1C3415394SCREW,DRIVE2
2C4992260DATAPLATE1
——END——

COVER,FRONT GEAR

No.Part No.Part NameQty/EngRemarks
1A3903663ZZCOVER,GEAR1
2C4991305SEAL,OIL1
3C4991307COVER,GEAR1
4C3900629SCREW,HEX FLANGE HEAD11
5C3900629SCREW,HEX FLANGE HEAD5
6C3900633SCREW,HEX FLANGE HEAD9
7C3900633SCREW,HEX FLANGE HEAD2
8C3903463COVER,ACCESS HOLE1
9C3903475SEAL,RECTANGLE1
10C3907998SCREW,ROUND HEAD CAP2
11C3913995ZZHOUSING,TIMING PIN1
12C3903924PIN,TIMING1
13C3904849RING,RETAINING1
14C3913994SEAL,O RING1
15C3919683HOUSING,TIMING PIN1
16C3915772SEAL,RECTANGLE1
17C3938156GASKET,GEAR HOUSING1
18C3960319GASKET,GEAR COVER1
19C3960338HOUSING,GEAR1
——END——

LEVER,ROCKER

No.Part No.Part NameQty/EngRemarks
1C3284377ROD,PUSH8
2C3901221SCREW,HEXAGON HEAD CAP4
3C3920781Screw,hex flange head ca4
4C3934920Support,Rocker lever4
——END——

FOLLOWER,CAM

No.Part No.Part NameQty/EngRemarks
1C3931623TAPPET,VALVE8
——END——

Block,Engine

No.Part No.Part NameQty/EngRemarks
13927772BEARING,CRANKSHAFT THRUS1
23937214NOZZLE,PISTON COOLING4
3C3901306BUSHING1
4C3903920BLOCK,CYLINDER1
5C3007635PLUG,EXPANSION2
6C3900965PLUG,EXPANSION4
7C3904217Screw,Hexagon Head Cap10
8C3913917CAP,MAIN BEARING5
9C3008468PLUG,PIPE1
10C3900068DOWEL,RING2
11C3900257DOWEL, PIN2
12C3900687PLUG,EXPANSION1
13C3902343DOWEL,RING2
14C3904483DOWEL, PIN1
15C3906619PLUG, PIPE1
16C3920706PLUG,EXPANSION1
17C3929016BEARING,MAIN4
18C3929021BEARING,CRANKSHAFT THRUS5
19C3929027Gear, Crankshaft1
20C3929036Crankshaft,Engine1
——END——

COVER,CAM FOLLOWER

No.Part No.Part NameQty/EngRemarks
1C3283767GASKET,PUSH ROD COVER1
2C3900630Screw,Hex flange headcap2
3C3918612HOSE,PLAIN1
4C3936188COVER,PUSH ROD1
5C4928971CLAMP,T BOLT1
6C4994848SEAL,GROMMET2
——END——

DAMPER,VIBRATION

No.Part No.Part NameQty/EngRemarks
1C3903857SCREW,HEX FLANGE HEAD CA4
2C3958258DAMPER,VIBRATION1
3C4932908FLANGE,CRANKSHAFT1
——END——

DRIVE,FRO GER TRA ACC

No.Part No.Part NameQty/EngRemarks
3C3900630Screw,Hex flange headcap2
4C3900965PLUG,EXPANSION1
5C3901249SCREW,HEX FLANGE HEAD2
6C3906619PLUG, PIPE1
1C3929751Gasket,Acc drive cover1
1C4942479PLATE,COVER1
——END——

ACCESSORIES,ELECTRICAL

No.Part No.Part NameQty/EngRemarks
1C3901249SCREW,HEX FLANGE HEAD1
2C4932505WIRE,GROUND1
——END——

THERMOSTAT

No.Part No.Part NameQty/EngRemarks
1C4930315THERMOSTAT1
——END——

ALTERNATOR

No.Part No.Part NameQty/EngRemarks
1C4938600ALTERNATOR1
——END——

MOUNTING,ALTERNATOR

No.Part No.Part NameQty/EngRemarks
1C3900631SCREW,HEX FLANGE HEAD3
2C3900631SCREW,HEX FLANGE HEAD1
3C3901249SCREW,HEX FLANGE HEAD1
4C3903105SCREW,HEX FRANGE HEAD CA1
5C3903210NUT,HEXAGON FLANGE1
6C3910923SUPPORT,ALTERNATOR1
7C3910924SUPPORT,ALTERNATOR1
——END——

DRIVE,ALTERNATOR

No.Part No.Part NameQty/EngRemarks
1C3285958BRACKET,BELT TENSIONER1
2C3900631SCREW,HEX FLANGE HEAD1
3C3911568BELT,V RIBBED1
4C3925186SCREW,FLAT HEAD CAP1
5C3937553TENSIONER,BELT1
6C3967107WASHER,PLAIN1
7C3979347SCREW,HEXAGON HEAD CAP1
——END——

SUPPORT,FRONT ENGINE

No.Part No.Part NameQty/EngRemarks
3C3335006SCREW,HEXAGON HEAD CAP6
4C3967119WASHER,SPRING6
5C4928962WASHER,PLAIN6
1C4988361SUPPORT,FRONT ENGINE1
1C4988362SUPPORT,FRONT ENGINE1
——END——

DEVICE,SIGNAL GENERATING

No.Part No.Part NameQty/EngRemarks
1C3967250SENSOR,TEMPERATURE1
——END——

SENSOR,OIL PRESSURE

No.Part No.Part NameQty/EngRemarks
1C3967251SENSOR,OIL PRESSURE1
——END——

SENSOR,SPEED

No.Part No.Part NameQty/EngRemarks
1C3971994SENSOR,SPEED2
——END——

DRIVE,FAN

No.Part No.Part NameQty/EngRemarks
1C3900678SCREW,HEX FLANGE HEAD4
2C3914458FULLEY,FAN1
3C4932907SUPPORT,FAN1
——END——

PLUMBING,AIR FUEL CONTRO

No.Part No.Part NameQty/EngRemarks
1C3906619PLUG, PIPE1
——END——

FILTER,FUEL

No.Part No.Part NameQty/EngRemarks
1C3906694SEAL,RECTANGLE1
2C3906695SEAL,RECTANGLE1
3C3911446SCREW,BANJO CONNECTOR1
4C3925955ADAPTER,FILTER HEAD1
5C3930942FILTER,FUEL1
6C3931063FILTER,FUEL1
7C3939570Screw,Captive washer cap1
8C3963983WASHER,SEALING2
9C4928959NUT,REGULAR HEXAGON1
10C4934663HEAD,FUEL FILTER1
——END——

PUMP,FUEL

NOPart NoPart NameQTYREMARKS
1C4937514PUMP,FUEL INJECTION1
——END——

HOUSING,FYYWHEEL

No.Part No.Part NameQty/EngRemarks
1C3008469PLUG,PIPE1
2C3900225SCREW,HEXAGON HEAD CAP2
3C3900627SCREW,HEX FLANGE HEAD6
4C3908095Plate,Cover1
5C3910248PLUG,O RING1
6C3910260SEAL,O RING1
7C3910540SCREW,HEX FRANGE HEAD8
8C3912473SEAL,RECTANGULAR RING1
9C3928989CLIP1
10C3938159GASKET,REAR COVER1
11C4933323ZZCOVER,REAR1
12C3936904Cover,Rear1
13C4982415SEAL,OIL1
14C4947579HOUSING,FLYWHEEL1
——END——

FAN,ENGINE

No.Part No.Part NameQty/EngRemarks
1C4940441FAN,ENGINE1
——END——

PUMP,FUEL

No.Part No.Part NameQty/EngRemarks
1C4946525PUMP,FUEL INJECTION1
——END——

PUMP,FUEL TRANSFER

No.Part No.Part NameQty/EngRemarks
1C3900631SCREW,HEX FLANGE HEAD2
2C3903035SCREW,BANJO CONNECTOR1
3C3914284SPACER,MOUNTING1
4C3939258GASKET,COVER PLATE2
5C3963983WASHER,SEALING2
6C3976729ELBOW,MALE ADAPTER1
7C4937767PUMP,FUEL TRANSFER1
8C4988330TUBE,FUEL SUPPLY1
——END——

VALVE,FUEL SHUTOFF

No.Part No.Part NameQty/EngRemarks
1C4942879SOLENOID,FUEL PUMP1
——END——

FYYWHEEL

No.Part No.Part NameQty/EngRemarks
1C3900269Washer,Plain4
2C3900269Washer,Plain4
3C3901395Screw,hexagon head cap4
4C3901395Screw,hexagon head cap4
5C4939064FLYWHEEL1
——END——

BRACKET,LIFTING

No.Part No.Part NameQty/EngRemarks
1C3910495SCREW,HEX FLANGE HEAD CA2
2C3977197BRACKET,LIFTING1
——END——

Labeling Engine

No.Part No.Part NameQty/EngRemarks
1C3974406TAG,IDENTIFICATI1
2C3975443COVER,PROTECTIVE1
3C4983154TAG1
4C4983155DECAL1
——END——

Cooler,Engine oil

No.Part No.Part NameQty/EngRemarks
1C3900632SCREW,HEX FLANGE HEAD14
2C3906619PLUG, PIPE1
3C3908616Cartridge,Lub oil filter1
4C3942915Gasket,filter head1
5C3957543CORE,COOLER1
6C3977852PLUG,THREADED1
7C4932124GASKET,OIL COOLER CORE1
8C4934218HEAD,LUB OIL COOLER1
——END——

GAUGE,OIL LEVEL

No.Part No.Part NameQty/EngRemarks
1C3900629SCREW,HEX FLANGE HEAD1
2C3900955PLUG,EXPANSION2
3C4935907CLIP1
4C4937482DIPSTICK1
5C4937483TUBE,OIL GAUGE1
6C4991519NUT,REGULAR HEXAGON1
——END——

PUMP,LUBRICATING OIL

No.Part No.Part NameQty/EngRemarks
1C3900677SCREW,HEXAGON HEAD CAP4
2C4939585PUMP,LUBRICATING OIL1
——END——

PAN,OIL

No.Part No.Part NameQty/EngRemarks
1C3900630Screw,Hex flange headcap1
2C3901049PAN,OIL1
3C3902425SEALING WASHER1
4C3905206Connection,Oil suction1
5C3920773WASHER,SEALING1
6C3924147PLUG,THREADED1
7C3924148PLUG,THREADED1
8C3938157Gasket,Falnge1
——END——

MOUNTING,OIL PAN

No.Part No.Part NameQty/EngRemarks
1C3900630Screw,Hex flange headcap2
2C3920400SCREW,HEX FLANGE HEAD CA28
3C3938162Gasket,Oil pan1
——END——

PERFORMANCE,PARTS

No.Part No.Part NameQty/EngRemarks
1A3908179ZZPISTON,ENGINE1
2C3904531RING,COMPRESSION PISTON4
3C3918315Ring,Compression Piston4
4C3920691RING,RETAINING4
5C3920691RING,RETAINING4
6C3932520Ring,Oil Piston4
7C3942581Rod,Engine Connecting4
8C3900919Screw,Connecting Rod2
9C4891178Bushing1
10C3971970BEARING,CONNECTING ROD8
11C4991277TUBE,CPR WATER INLET4
12C4991283PIN,PISTON4
13C3900227SCREW,HEXGON HEAD CAP2
14C3927155SUPPORT,CAMSHAFT THRUST1
15C3929028Gear,Camshaft1
16C3929039CAMSHAFT1
17C4928969KEY,PLAIN WOODRUFF1
18A3960745ZZINJECTOR1
19C3355015Injector4
20C3909356Seal,Rectangular Ring4
——END——

HEAD,CYLINDER

No.Part No.Part NameQty/EngRemarks
1C3008468PLUG,PIPE2
2C3906619PLUG, PIPE1
3C3906619PLUG, PIPE1
4C3920779Screw,Hex flange head ca4
5C3920780Screw,hex flange head ca10
6C3967432HEAD,CYLINDER1
73900250COLLET,VALVE16
8C3916691SPRING,VALVE4
9C3926700SPRING,VALVE4
10C3957912SEAL,VALVE STEM8
11C3957913RETAINER,VALVE SPRING8
12C3966448HEAD,CYLINDER1
13C3812092Plug,Pansion3
14C4994143VALVE,EXHAUST4
15C4995554VALVE,INTAKE4
——END——

MOUNTING,CYLINDER HEAD

No.Part No.Part NameQty/EngRemarks
1C3283333GASKET,CYLINDER HEAD1
——END——

SUPPORT,REAR ENGINE

No.Part No.Part NameQty/EngRemarks
1C3335006SCREW,HEXAGON HEAD CAP8
2C3967119WASHER,SPRING8
3C3976617SUPPORT,REAR ENGINE2
——END——

ACCESSORIES,ELE STARTING

No.Part No.Part NameQty/EngRemarks
1C3967109WASHER,PLAIN4
2C3967110WASHER,SPRING4
3C4988354RELAY2
4C4988412BRACKET,RELAY1
5C4991519NUT,REGULAR HEXAGON4
6C4991520SCREW,HEXAGON HEAD CAP4
——END——

MOUNTING,STARTING

No.Part No.Part NameQty/EngRemarks
1C3968470SCREW,TWELVE POINT3
——END——

SPACER,FAN PILOT

No.Part No.Part NameQty/EngRemarks
1C3900589NUT,HEXAGON FLANGE4
2C3925344SCREW,HEX FLANGE HEAD CA4
3C4931787FLANGE,CONNECTION1
4C4988581NUT,HEXAGON FLANGE4
5C4991497STUD4
——END——

PAINT

No.Part No.Part NameQty/EngRemarks
1C3991084NAMEPLATE1
——END——

PAN,OIL

NOPart NoPart NameQTYREMARKS
13974294PAN,OIL1
2C3013786PLUG,PIPE1
3C3901865SCREW,HEX FLANGE HEAD CA1
4C3902425SEALING WASHER1
5C3906216NUT,HEXAGON FLANGE1
6C3907860SCREW,HEX FLANGE HEAD CA32
7C3910960PLAIN WASHER1
8C3913638SCREW,HEX FLANGE HEAD CA2
9C3920773WASHER,SEALING1
10C3924147PLUG,THREADED1
11C3924148PLUG,THREADED1
12C3926865SPACER,MOUNTING2
13C3927611BRACE,TUBE1
14C3939352GASKET,OIL SUC CONNECT1
15C3944264CONNECTION,OIL SUCTION1
16C3973509GASKET,OIL PAN1
17Q1840630SCREW,HEX FLANGE HEAD2
——END——

PARTS,PERFORMANCE

NOPart NoPart NameQTYREMARKS
13950661BEARING,CONNECTING ROD6
23966244BEARING,CONNECTING ROD6
33966721SKIRT,PISTON6
43979744ROD,ENGINE CONNECTING6
54941395TOP,PISTON6
6C3900227SCREW,HEXGON HEAD CAP2
7C3902023SCREW,HEX FLANGE HEAD6
8C3918777GEAR,CAMSHAFT1
9C3920692RING,RETAINING12
10C3921919RING,OIL PISTON6
11C3940639CLAMP,INJECTOR6
12C3940817SCREW,HEX FLANGE HEAD CA6
13C3944001SUPPORT,CAMSHAFT THRUST1
14C3948412RING,COMPRESION PISTON6
15C3950549PIN,PISTON6
16C3964073RING,COMPRESSION PISTON6
17C3976620CAMSHAFT1
18C4937512INJECTOR6
——END——

PLUMBING,INJECTOR

NOPart NoPart NameQTYREMARKS
13936953CONNECTOR,MALE6
2C3882589SEAL,O RING1
3C4931173CONNECTOR,MALE1
4C3902114SCREW,HEX FLANGE HEAD CA1
5C3976433TUBE,INJECTOR FUEL SUPP1
6C3976434TUBE,INJECTOR FUEL SUPP1
——END——

PLUMBING,CYLINDER HEAD

NOPart NoPart NameQTYREMARKS
1C3008468PLUG,PIPE6
2C3008469PLUG,PIPE1
——END——

HEAD,CYLINDER

NOPart NoPart NameQTYREMARKS
13967059GASKET,CYLINDER1
2C3960043SCREW,HEX FLANGE HEAD26
3C3977851PLUG,THREADED1
4C4936714HEAD, CYLINDER1
53900250COLLET,VALVE48
63948578SEAL,VALVE STEM24
7C3944452RETAINER,VALVE SPRING24
8C3944711SPRING,VALVE24
9C4929518HEAD,CYLINDER1
103940152INSERT,VALVE12
113968074INSERT,VALVE12
124934063GUIDE,VALVE STEM24
13C3032693PLUG,EXPANSION2
14C3920706PLUG,EXPANSION18
15C3945093PLUG,EXPANSION1
16C3945094PLUG,EXPANSION2
17C3945095PLUG,EXPANSION6
18C3945097PLUG,EXPANSION1
19D3942588VALVE,INTAKE12
20D3942589VALVE,EXHAUST12
——END——

TURBOCHARGER

NOPart NoPart NameQTYREMARKS
1C3818823STUD4
2C3818824NUT,HEXAGON FLANGE4
3C3901356GASKET,TURBOCHARGER1
4C4046383TURBOCHARGER1
——END——

LEVER,ROCKER

NOPart NoPart NameQTYREMARKS
1C3901447SCREW, HEX FLANGE HEAD7
2C3920706PLUG,EXPANSION3
3C3943445CROSSHEAD,VALVE12
4C3964715ROD,PUSH12
5C3966708GASKET,RKR LEVER HOUSING1
6C3967265HOUSING,ROCKER LEVER1
7C3972540ASSY,ROCKER LEVER6
——END——

VENT,ENGINE CONNECTION

NOPart NoPart NameQTYREMARKS
1C3943670FITTING,ORIFICE1
——END——

SWITCH,COO TEMPERATURE

NOPart NoPart NameQTYREMARKS
1C3979176SENSOR,TEMPERATURE1
——END——

SENSOR,OIL PRESSURE

NOPart NoPart NameQTYREMARKS
1C3678912SEAL,O RING1
2C4931169SENSOR,OIL PRESSURE1
——END——

MOUNTING,STARTING MOTOR

NOPart NoPart NameQTYREMARKS
1C3415518SPACER,STARTER1
2C3968466SCREW,TWELVE POINT3
——END——

PAINT

NOPart NoPart NameQTYREMARKS
1C3991084NAMEPLATE1
——END——

KIT,ENGINE INSTALLATION

No.Part No.Part NameQty/EngRemarks
1C3903380SEAL,BANJO CONNECTOR3
2C3906694SEAL,RECTANGLE1
3C3906695SEAL,RECTANGLE1
4C3910824SEAL,O RING3
5C3920773WASHER,SEALING1
6C3930906Gasket,Valve cover3
7C3936876SEAL,RECTANGULAR RING1
8C3937706GASKET,OIL DRAIN1
9C3939258GASKET,COVER PLATE1
10C3942915Gasket,filter head1
11C3963983WASHER,SEALING2
12C4932124GASKET,OIL COOLER CORE1
——END——

KIT,ENGINE INSTALLATION

No.Part No.Part NameQty/EngRemarks
1C3900623SCREW,HEXAGON HEAD CAP16
2C3967107WASHER,PLAIN28
3C3967108WASHER,SPRING28
4C4928973CLAMP,T BOLT4
5C4928974CLAMP,T BOLT4
6C4988423MUFFLER1
7C4988425CONNECTION,TUR OIL DRAIN1
8C4988430HOSE,FLEXIBLE1
9C4988431HOSE,FLEXIBLE1
10C4988449SWITCH,SELECTOR2
11C4988450REGULATOR,VOLTAGE1
12C4991524SCREW,HEXAGON HEAD CAP28
13C4991552NUT,REGULAR HEXAGON12
——END——

MOTOR,STARTING

No.Part No.Part NameQty/EngRemarks
1C4944701MOTOR,STARTING1
——END——

HOUSING,THERMOSTAT

No.Part No.Part NameQty/EngRemarks
1C3281246Bracket,Lifting1
2C3285102HOUSING,THERMOSTAT1
3C3900632SCREW,HEX FLANGE HEAD1
4C3923331Gasket,Thm housing cover1
5C3926972SCREW,HEX FLANGE HEAD CA2
——END——

LEVER,THROTTLE

No.Part No.Part NameQty/EngRemarks
1C3967107WASHER,PLAIN2
2C3967108WASHER,SPRING2
3C4942951BRACKET,THROTTLE CONTROL1
4C4991523SCREW,HEXAGON HEAD CAP2
1TO90000ZZTOOL, SERVICE1
1C4996942TOOL,SERVICE1
2C4996951BAG,SERVICE TOOL1
——END——

Cover,Valve

No.Part No.Part NameQty/EngRemarks
1C3901895CAP,FILLER1
2C3907049Screw,Hex flange head ca4
3C3928404Cover,Valve3
4C3928405Cover,Valve1
5C3930906Gasket,Valve cover4
6C3935449ISOLATOR,NOISE4
7C3936876SEAL,RECTANGULAR RING1
——END——

VENT,ENGINE COOLANT

No.Part No.Part NameQty/EngRemarks
1C4938322COUPLING,PLAIN HOSE1
——END——

CONNECTION,WATER INLET

No.Part No.Part NameQty/EngRemarks
1C3008469PLUG,PIPE1
2C3906697SEAL,RECTANGULAR RING1
3C3973197CONNECTION,WATER INLET1
4C4991495SCREW,HEX FLANGE HEAD CA3
——END——

CONNECTION,WATER INLE

No.Part No.Part NameQty/EngRemarks
1C3008468PLUG,PIPE21
——END——

PUMP,WATER

No.Part No.Part NameQty/EngRemarks
1C3900227SCREW,HEXGON HEAD CAP21
2C3906698SEAL,RECTANGULAR RING12
3C4935793PUMP,WATER13
——END——

MANIFOLD,EXHAUST

No.Part No.Part NameQty/EngRemarks
1A3918906COVER,INTAKE MANIFOLD11
2C3008468PLUG,PIPE22
3C3900678SCREW,HEX FLANGE HEAD33
4C3901635MANIFOLD,EXHAUST14
5C3929881GASKET,EXHAUST MANIFOLD45
6C3930249SCREW,HEX FRANGE HEAD CA86
7C3938153GASKET,INT MANIFOLD COVE17
8C3938158GASKET, CONNECTION18
9C4928946SCREW,HEX FLANGE HEAD CA59
10C4928973CLAMP,T BOLT210
11C4988334CONNECTION,AIR INTAKE111
12C4991284HOSE,PLAIN112
——END——

CONNECTION,EXHAUST OUTLE

No.Part No.Part NameQty/EngRemarks
1C3818823STUD4
2C3818824NUT,HEXAGON FLANGE4
3C4939256CONNECTION,EXHAUST OUTLE1
4C4947182GASKET,TURBOCHARGER1
1C3908616Cartridge,Lub oil filter1
1C3911568BELT,V RIBBED1
1C3930942FILTER,FUEL1
1C3931063FILTER,FUEL1
——END——

CONNECTION,EXHAUST OUTLE

NOPart NoPart NameQTYREMARKS
1C3008466PLUG ,PIPE1
2C3415546CLAMP,V BAND1
3C3902460SCREW,HEX FLANGE HEAD4
4C3910994PIPE,EXHAUST OUTLET1
5C3944060BRACE,EXHAUST CONNECTION1
6C70880WASHER,PLAIN2
7C3071049HOSE,HUMP6Kit
8C3415597CLAMP,SPRING HOSE8Kit
——END——

DCEC 4B3.9-G2-B generator drive engine is a 4-cylinders in line,3.9 liter four-strokes engine with 102 mm bore and 120 mm stroke.

Equipped with BYC A pump and electronic governor, The prime power for 50 Hz generator set 1800 RPM of DCEC 4B3.9-G2-B generator drive engine is 30 kW.

As part of EMAC, SinoGen also provide complete power supply solutions that powered by DCEC, our ranges of products including open type generator set, silence type generator set, super silence type generator set, mobile trailer, complete power truck and complete power car for railways applications.

We provide full life cycle services for all customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

  • Efficient and fuel-saving: the cylinder bore adopts a platform mesh honing design; the perfect geometric structure effectively prevents oil leakage.

  • adopts advanced technologies such as new piston ring components and gasket crimping molding to reduce oil loss.

  • Manufacturing process: The cylinder block and cylinder head adopt integrated design, which eliminates the occurrence of engine water leakage and oil leakage.

  • The parts are about 40 % less than other similar engines, and the failure rate is greatly reduced.

  • Strong power: adopts Holset supercharger with integral wastegate valve, low-speed response and strong power.

  • Advanced design and high-quality manufacturing, adaptable to severe operating conditions, high strength, and reliable operation under heavy load.

Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.

What's the Standard Scopes of Supply?

With full ranges of emission standard from Euro 2 to Euro 7, Dongfeng Cummins producing 12 series marine engines, started from 3.9 liter engine, to 15 liter engine, covering the power range of 125HP to 650HP.
Dongfeng Cummins marine engine customize developing configurations for big vehicle OEMs in China, based on each of requirement, Dongfeng Cummins producing dozens of different configuration engines with same engine model number, which only SO-Shop Order will be different with each other, the SO number is the identify number of the engine configuration of each model.
Even with same engine model, different SO number engine can have very different configuration with each other, with different prices. Some of SO-Shop Order is not available for commercial market, such as restricted models (Usually for military specifications).
EMAC offering most common, cost effective models which also able to process the production in Dongfeng Cummins, which usually have following accessories as standard configuration.

Scopes of Supply of DCEC Marine Engine

Air Intake System1. Air Intake Manifold        Exhuast System1. Exhuast Manifold
2. Air Filter2. Turbocharger
3. N / A3. Exhuast Elbow
Starting System1. Starter Motor        Charging System1. Charging Alternator
2. Starter Rely2. N / A
Lubricating System1. Oil Pump        Fuel System1. Fuel Transfer Pump
2. Oil Filter2. High-Pressure Fuel Pump
3. N / A3. Machanical Governor
4. N / A4. Fuel Filter
Engine Shut-Down System1. Engine Fuel Shut-Off Solenoid        Power Output System1. Flywheel
2. N / A2. Standard Flywheel Housing
------END------

What's the Available Optional Items?

Dongfeng Cummins only provides customize service for the large quantity orders or large OEMs, which means usually the order quantity are higher than 1000 units. For the small quantity engine project, EMAC provides customize services with our own resource and engineer team.
EMAC have rich experience on the customize developing, which provides abundant optional items based on the requirement of each project. The typical optional items are special Prestolite charging alternator, prestolite starter motor, Knorr Air compressor. Valeo air conditioning compressor, ECU output socket set, engine accelerate pedal etc.

Optional Accessories of DCEC DCEC marine Engine

Air Intake System1. Air Intake Pre-HeaterExhuast System1. Muffler & Bellows
2. Air Intake Pre-Filter2. Flame Trap
3. Air Filter Alarm System3. Spark Arrestor Type Muffler & Bellows
4. N / A4. DPF System
Fuel System1. Coarse FilterEngine Auiliary Accessories1. Hydraulic Oil Pump
2. Fuel Pre-Heater2. Hydraulic Cluch
Starting System1. Manual Magnetic DC ContactorCooling System1. Engine Monitor
2. Dual Ears Flywheel Housing2. Engine Protection System With Alarm System
3. Spring Starter Motor3. Machanical Engine Control Lever Syste
4. Air Starter Motor4. Electric Engine Control Lever System
5. Hydraulic Starter Motor5. N / A
6. Manual Magnetic DC Contactor6. N / A
 
Power Output System1. Gear Reduction GearboxCooling System1. Coolant Pre-Heater
2. Reverse Gear Box2. Jacket Water Heater
 
Lubricating System1. Oil Pre-HeaterEngine Mounting System1. Shock Absorber Pad
------END------

Committed to providing reliable premium propulsion system and power system for all kinds of ships around the world, SeaMac is a sub-brand of EMAC group that focused on maritime application.
SeaMac's ranges of products mainly inclduing marine main engine, marine gearbox, marine propellers, marine control lever system, marine auxiliary engine, marine generator set and emergency generator set.
For more information of our marine proplusion and power system products, you are welcome to visit SeaMac homepage: www.seamac.com

What's the Modifiable Items and Scopes?

As explained in the standard scopes of supply, Dongfeng Cummins not able to provide customize developing for small quantity projects or small OEMs, so EMAC helps SME OEMs to provide customize services, not only providing additional optional items, but also provides customize modification services to meet their requirements based on the exisiting engine SO number.
As flexible service ability is our core advantages, EMAC is very experienced and good at providing customize services, the common customize services are as below:
1: AIr Intake System: Change the air intake direction.
2: Air Exhuast System: We are able to change the turbocharger direction as the interaction on installation could be occured, also change change the air exhuast direction.
3: Lubricating System: Modify lubricating system is one of the most common requirement from customer, we can provide flat-type engine oil pan, to lower down total engine height, which usually required for special vehicles. For the standard engine oil pan, we also can change the direction of the engine oil pan.
4: Cooling System: There are lots of options for the engine cooling system, for the engine fan, we can provide customize for the material of engine fan (plastic fan or steel fan), wind direction of the engine fan (blower fan or suction fan ) and types of engine fan (mechanical fan or electric control fan).
5: Power Output System: Most of electronic controlled Dongfeng Cummins marine engines are comes with SAE#1 flywheel housing now, while lots of customers need SAE#2 flywheel because of the housing of transmissio is SAE#2, so we have to provide customzie services for those customer, which need to modify flywheel housing, flywheel and starter motor, we also have PTO integrated type flywheel housing available, which can output the whole power of the engine from the PTO on the flywheel housing, we can also provide modification of the mounting side of the starter motor.
6: Electric System: All of Dongfeng Cummins engines are comes with standard 24V electric system, while some customer need to modify the electric system into 12V, we can also modify the starter motor and alternator into appointed brand or appointed specifications.
EMAC is your reliable professional power system partner, feel free to contact our services team to get detailed information about our standard scopes of supply, optional items and modifiable parts for our Dongfeng Cummins marine engine, we are ready to explore the journey of our cooperation.

How to Order Engine to Replace Your Old Engine?

There are three types of engine replacements demand, type A is to replace the old Dongfeng Cummins engine, the original engine is produced by Dongfeng Cummins, type B is to replace Cummins engine produced in other countries including UK, USA, Mexico, India or Japan Komatsu Cummins, type C is to replace other brands engine or even gasoline engines with Dongfeng Cummins produced engines. The detailed introduction and replacement process are as below:
Type A: Engine Replacement Requirement (Original Engine is Dongfeng Cummins Engine).
This is most simple demand case, you just need to provide us the original engine name plate, and then we can easily check and confirm what exactly you need, and we also ensuring that the engine from us will be 100% same with your original engine. (In some case that the vehicle manufacturing modify the engine on their own, we are not able to supply the parts or the condition that modified by the vehicle manufacturer)
Type B: Engine Replacement Requirement (Original Engine is Cummins Engine but produced in UK, USA or other Cummins engine plant).
EMAC have rich experiences in replace the UK, USA or other engine plant produced engine, with Dongfeng Cummins produced Cummins engines, we required the original engine name plate photo to obtain the related information (at least we will need engine serial number, with engine model name only is useless for us, we are not able to provide quotation with engine model name only for the replacement project), and then we can check out the BOM list and all accessories of your original engine serial number, and then we can check and compare with the BOM list of our Dongfeng Cummins produced engine, choose the most closest SO number engine, and modify the parts that not same with your original engine, we have delivered hundreds of cases of replace the customer's original engine that produced in Cummins UK, USA or other engine plants with Dongfeng Cummins produced engines, you can refer to our video introduction on Youtube: https://youtu.be/dYVgRM5NsUo
We can NOT guarantee the engine produced by Dongfeng Cummins is exactly same with your original engine, but we can guarantee that all of engines from EMAC will have no problem with installtion and performance, which all of engines can works very well after replacement.
Type C: Engine Replacement Requirement (Original Engine is other brnad engines even gasoline engines).
EMAC also have rich experiences in replace the engine that not Cummins installed, these engines can be other brands such as Deutz, Caterpillar, Perkins, Komatsu or others, we even had experiences of replace gasoline engine with Dongfeng Cummins produced diesel engines.
This kind of appliaction is more complex and quite risky, EMAC can't do much thing due to lacking of information, the only thing we can guarantee is the performance after replacement, we check and compare the engine performance curve of original engine and our Dongfeng Cummins engine, and then we select the most suitable model for replacement. Due to we are lacking of the installation spaces and related accessories, we will send the both CAD and 3D drawing for our recommend engine model, and then customer have to evaluate the risky of replace the original engine with our engine, especially the risky of space, the possibile interactive when installation, and the risky of modify related coolant pipe, air pipes and wiring harness. Normally this kind of request consuming lots of energy and resource for us to carry on, also quite risky for us, so we will not work on the replacement quantity that below 50 units.
When your requirement is replacement, please tell our customer service team of what type of replacement you need, and provide us original engine name plate, the engine name plate is the necessary material before we start our business negotiations, we will NOT reply to all inquiry that even can't provide engine name plate.

How to Choose the Right Dongfeng Cummins Marine Engine for You?

To choose a suitable engine for truck, bus or special vehicle manufacturer is quite simple, because the buyer is the manufacturer, so usually they are quite flexible with space, pipes and wiring connections.
The following process are the standard process for us to select a suitable engine model for truck, bus or special vehicle manufacturer demand.
Step 1: We need basic information of the required engine, including rated power, rated speed and emission standard of the required engine.
Step 2: EMAC will evaluate the requirement and select the suitable engine model for customer, with engine data sheet, engine performance curve, CAD darwing, 3D model and budgetary quotation provided back to customer.
Step 3: Customer should check and compare the engine data sheet, performance curve and related drawing and confirm all details one by one. Most important thing is confirm the performance curve suitable for the requirement.
Step 4: After engine confirmed, we have to check and confirm the specifications of accessories one by one carefully, like the electric system specifications (12V or 24V), the detailed specifications of starter motor, charging alternator, air compressor, power steering pump, A/C compressor etc.
Step 5: Confirming the accessories positions and connections, customer need to check and confirm all positions are suitable for the project, such as engine fan, turbocharger, oil pan position, and connections of air pipe, coolant pipe, wiring harness etc.
Step 6: After confirming the engine performance, position, connection and specifications of all accessories, we will be able to provide accurate quotation for prototype and batch order. Prototype is strongly recommend to start the cooperation, to avoid the possible problem, risky on the engine with batch order.
Notes:
1: Technical support including technical training, onsite installation and commissioning services are avaiable with additional chargers.
2: We are able to supply complete powertrain system, including engine, transmission, transfer, axle, suspension etc, engine with transmission is highly recommended, because if we supply both engine and transmission, we can run simulations for the vehicle, which we usually will provide customer a simulation report, with the simulated result of Balanced Maximum Vehilce Speed and Maximum Grade Ability at different speed.
3: EMAC able supply complete chassis that integrate all powertrain system together, which can greatly reduce the manufacturer's design works and reduce the system mismatching risky.

Tips of Dongfeng Cummins Marine Engines!

Dongfeng Cummins is one of 50:50 joint venture of Cummins in China, its official Cummins factory that following high Cummins USA production and quality control standard, the Dongfeng Cummins factory swap every 5 years between appointed employee from Dongfeng Motor and Cummins. For more details, you can refer to the company introduction of DCEC-Dongfeng Cummins Engine Company.


Started the production of Cummins engines in China in 1980s, Cummins products has been in China for over 40 years, thousands of people have worked for Cummins China and some of them are very skilled experienced engineer, some of them resigned from Cummins to set up their own small workshops or assembly factories that focusing on producing copy Cummins engines.

Price is always not the problem for Chinese suppliers, there are many tickies to lower down the engine prices, such as supply self-rebuild engine as new engine, supply official RECON engine from Cummins as brand new engine, assembly the fake engine with after-market parts, supply lower power model engine and change the name plate etc. You can find plenty of suppliers on alibaxx.com with various prices, the classic Chinese business style is tell you that he give you very low price and not make profit, how can you believe a businessman will make business that have no profit? They gave you low price not becuase they share their profit to you?
As a matter of fact, Chinese supplier often make their profit much more higher by selling the low quality copy products as genuine brand new products! Always remember YOU GET WHAT YOU PAID!
The key point of dealing with Chinese supplier, is to find and choose reliable business partner that will not cheat you for short-term business, but with vision of build long-term career and life-time partnership, EMAC is one of the reliable partner that not chasing for short-term high profit, but we cares our decades of good reputation and we working with all business partners not as supplier and customers, but as close friend and brothers.

FAQ of Dongfeng Cummins Marine Engines?

1: What mean by DCEC?
DCEC is the short name of Dongfeng Cummins Engine Company, take the first letter of each word, it comes with DCEC as short name, for more details about DCEC, you can refer to the company introduction of DCEC-Dongfeng Cummins Engine Company.

2: Does your engines copy products?
This question is quite often from customer that not familiar with Cummins, Cummins have over 20 joint ventures in China now, and 6 of them are engine joint venture, which Cummins owns 50% share of all of those 6 engine plants, so all of the Cummins factories in China are genuine Cummins factory, that following high Cummins USA production and quality control standard. EMAC is the business partner of DCEC, and we are supplying powertrain and engine power pack based on genuine brand new engines from Dongfeng Cummins for all different applications, EMAC is a reliable and professional power system solution provider that offering abundant various options.
3: Why there are so many companies selling Cummins engines?
There are plenty of companies selling Cummins engines in China, especially on the B2B platform, such as alibaxx.com, you can find plenty suppliers there with attractive prices, Cummins products has been in China for over 40 years, thousands of people have worked for Cummins China and some of them are very skilled experienced engineer, some of them resigned from Cummins to set up their own small workshops or assembly factories that focusing on producing copy Cummins engines. You should be careful of being cheated by the attractive prices with copy or rebuild products.
4: How can I identify if the engine genuine or not?
Cummins keep working on the updating its identification system, technically, there are serial number on all key components of Dongfeng Cummins engines, including cylinder block, cylinder head, turbochager, fuel pump, starter motor, alternator, you can collecting the serial number (NOT part number), and then call DCEC call service center to identify if all the numbers are matching to the original number or not. EMAC continuously updating the latest Cummins identification system, you are welcome to following our website or keep in touch with our customer services team to get latest information from Cummins.
5: What's the warranty policy for the engines supplied by EMAC?
EMAC following standard Dongfeng Cummins warranty policy, which will update sometimes, you can following us to get the latest warranty policy from Dongfeng Cummins. Generally EMAC only afford the defective parts cots and shipping costs for the warranty claims, labor costs and transportation costs are not covered in the warranty.
However, EMAC is building our own independant after-sales service system now, which aims to build a global service network, with resouces of global repair and engineering network, which we believe can bring all business partner benifit in future, helping all of OEM manufacturers expanding their market into global market without worries of lacking after-sales service network. For more details about our Global Service, you can visiting www.global-service.com.
6: How about the future parts supply for the engines? Are you able to supply parts?
As the support team of EMAC's business scope, PartMac is our own brand that focusing on genuine parts directly from all brand factories.
All of EMAC’s partners are facing big challenges with sourcing original spare parts in China. Committed to providing truthworthy and professional after-sales support and parts supply, PartMac is a sub-brand of EMAC group that focusing on parts business. Stick to original parts only, PartMac can’t give any solution on CHEAP PARTS, but you don’t need to worry about any quality issues with every single parts from PartMac.
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